CXL

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In this work, we evaluate true CXL-ready systems based on the latest 4th-generation Intel Xeon CPU with three CXL memory devices from different manufacturers, which divulges important differences between emulated and true CXL memory devices. Based on these observations, we propose a CXL-memory-aware dynamic page allocation policy, Caption, to use CXL memory more efficiently.

In this work, we explore CXL memory’s performance characterization on a state-of-the-art experimental platform and study the impact of CXL memory on end-to-end applications with different offloading and interleaving policies.